Soil Mixer 2019/Controller: Difference between revisions
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==Hydraulic Circuit Simulation== | ==Hydraulic Circuit Simulation== | ||
===12/18/2019 (Lesser Quality Models)=== | |||
Using demo version of FluidSIM | |||
= | {| | ||
|+style="font-size:150%|'''Series Circuits''' | |||
!Series Circuit with three way flow controller on motor | |||
!With flow (q) and pressure (p) during the simulation | |||
|- | |||
|<html><video width="100%" height="100%" loop controls muted><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Series%20Circuit%201-1.webm" type="video/webm"></video></html> | |||
|<html><video width="100%" height="100%" loop controls mute><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Series%20Circuit%202-1.webm" type="video/webm"></video></html> | |||
|} | |||
{| | |||
|+style="font-size:150%|'''Sequence Valve Circuits''' | |||
!Using a pressure relief valve in the simulator as a sequence valve. | |||
!Outlet from cylinder valve is plumbed through a check valve to motor. | |||
! | |||
! | |||
|- | |||
|<html><video width="100%" height="100%" loop controls mute><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Mixer%20Sequence%20Valve%20Circuit%201-1.webm" type="video/webm"></video></html> | |||
|<html><video width="100%" height="100%" loop controls mute><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Mixer%20Sequence%20Valve%20-%20check%20valve.webm"></video></html> | |||
|- | |||
|high pressure remains at the pump outlet throughout simulation. something must be missing from the system or the valves aren't set right. | |||
| Increases motor flow during retraction of cylinder. Interesting effect- I didn't expect it. This circuit isn't great because pump outlet pressure is constantly above 2700psi. | |||
|} | |||
In both the above videos the setting of the two pressure relief valves changes motor speed and cylinder travel speed. I try to set it to minimize flow through main bypass valve. | In both the above videos the setting of the two pressure relief valves changes motor speed and cylinder travel speed. I try to set it to minimize flow through main bypass valve. | ||
=Electronics= | =Electronics= | ||
Revision as of 15:35, 19 December 2019
This page includes information about the entire electromechanical hydraulic control system for the soil mixer. This is a variant of CEB Press Controller v19.01
Controller Requirements
- Needs to switch a double acting cylinder while running a hydraulic motor
- Needs to cycle a dc motor for cement dosing
- Water mister solenoid
Hydraulics
Hydraulic Diagram
Hydraulic Circuit Simulation
12/18/2019 (Lesser Quality Models)
Using demo version of FluidSIM
| Series Circuit with three way flow controller on motor | With flow (q) and pressure (p) during the simulation |
|---|---|
| Using a pressure relief valve in the simulator as a sequence valve. | Outlet from cylinder valve is plumbed through a check valve to motor. | ||
|---|---|---|---|
| high pressure remains at the pump outlet throughout simulation. something must be missing from the system or the valves aren't set right. | Increases motor flow during retraction of cylinder. Interesting effect- I didn't expect it. This circuit isn't great because pump outlet pressure is constantly above 2700psi. |
In both the above videos the setting of the two pressure relief valves changes motor speed and cylinder travel speed. I try to set it to minimize flow through main bypass valve.